Commit Graph

216 Commits

Author SHA1 Message Date
Junio C Hamano
e861ce1692 Merge branch 'jc/bare'
* jc/bare:
  Disallow working directory commands in a bare repository.
  git-fetch: allow updating the current branch in a bare repository.
  Introduce is_bare_repository() and core.bare configuration variable
  Move initialization of log_all_ref_updates
2007-01-11 16:50:36 -08:00
Junio C Hamano
93c1e07947 config-set: check write-in-full returns in set_multivar
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-11 13:19:31 -08:00
Brian Gernhardt
cdd4fb15cf Auto-quote config values in config.c:store_write_pair()
Suggested by Jakub Narebski <jnareb@gmail.com> on the list.

When we send a value to store_write_pair(), make sure that the value
that gets read out matches the one passed in.  This means that for any
value that contains leading or trailing whitespace or any comment
character (# and ;), we need to surround it in quotes.

Signed-off-by: Brian Gernhardt <benji@silverinsanity.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-08 22:00:18 -08:00
Andy Whitcroft
480c9e521b short i/o: fix config updates to use write_in_full
We need to check that the writes we perform during the update of
the users configuration work.  Convert to using write_in_full().

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-08 15:44:47 -08:00
Junio C Hamano
7d1864ce67 Introduce is_bare_repository() and core.bare configuration variable
This removes the old is_bare_git_dir(const char *) to ask if a
directory, if it is a GIT_DIR, is a bare repository, and
replaces it with is_bare_repository(void *).  The function looks
at core.bare configuration variable if exists but uses the old
heuristics: if it is ".git" or ends with "/.git", then it does
not look like a bare repository, otherwise it does.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-01-07 21:36:35 -08:00
Junio C Hamano
76d4e079ad Merge branch 'master' into sp/mmap
* master:
  Documentation/config.txt (and repo-config manpage): mark-up fix.
  Teach Git how to parse standard power of 2 suffixes.
  Use /dev/null for update hook stdin.
  Redirect update hook stdout to stderr.
  Remove unnecessary argc parameter from run_command_v.
  Automatically detect a bare git repository.
  Replace "GIT_DIR" with GIT_DIR_ENVIRONMENT.
  Use PATH_MAX constant for --bare.
  Force core.filemode to false on Cygwin.
  Fix formatting for urls section of fetch, pull, and push manpages
  Fix yet another subtle xdl_merge() bug
  i18n: drop "encoding" header in the output after re-coding.
  commit-tree: cope with different ways "utf-8" can be spelled.
  Move commit reencoding parameter parsing to revision.c
  Documentation: minor rewording for git-log and git-show pages.
  Documentation: i18n commit log message notes.
  t3900: test log --encoding=none
  commit re-encoding: fix confusion between no and default conversion.
2006-12-30 22:42:43 -08:00
Shawn O. Pearce
d77a64d353 Teach Git how to parse standard power of 2 suffixes.
Sometimes its necessary to supply a value as a power of two in a
configuration parameter.  In this case the user may want to use the
standard suffixes such as K, M, or G to indicate that the numerical
value should be multiplied by a constant base before being used.

Shell scripts/etc. can also benefit from this automatic option
parsing with `git repo-config --int`.

[jc: with a couple of test and a slight input tightening]

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-30 22:22:14 -08:00
Shawn O. Pearce
c4712e4553 Replace mmap with xmmap, better handling MAP_FAILED.
In some cases we did not even bother to check the return value of
mmap() and just assume it worked.  This is bad, because if we are
out of virtual address space the kernel returned MAP_FAILED and we
would attempt to dereference that address, segfaulting without any
real error output to the user.

We are replacing all calls to mmap() with xmmap() and moving all
MAP_FAILED checking into that single location.  If a mmap call
fails we try to release enough least-recently-used pack windows
to possibly succeed, then retry the mmap() attempt.  If we cannot
mmap even after releasing pack memory then we die() as none of our
callers have any reasonable recovery strategy for a failed mmap.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-29 11:36:45 -08:00
Shawn O. Pearce
40be82723c Ensure core.packedGitWindowSize cannot be less than 2 pages.
We cannot allow a window to be smaller than 2 system pages.
This limitation is necessary to support the feature of use_pack()
where we always supply at least 20 bytes after the offset to help
the object header and delta base parsing routines.

If packedGitWindowSize were allowed to be as small as 1 system page
then we would be completely unable to access an object header which
spanned over a page as we would never be able to arrange a mapping
such that the header was contiguous in virtual memory.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-29 11:36:45 -08:00
Shawn O. Pearce
60bb8b1453 Fully activate the sliding window pack access.
This finally turns on the sliding window behavior for packfile data
access by mapping limited size windows and chaining them under the
packed_git->windows list.

We consider a given byte offset to be within the window only if there
would be at least 20 bytes (one hash worth of data) accessible after
the requested offset.  This range selection relates to the contract
that use_pack() makes with its callers, allowing them to access
one hash or one object header without needing to call use_pack()
for every byte of data obtained.

In the worst case scenario we will map the same page of data twice
into memory: once at the end of one window and once again at the
start of the next window.  This duplicate page mapping will happen
only when an object header or a delta base reference is spanned
over the end of a window and is always limited to just one page of
duplication, as no sane operating system will ever have a page size
smaller than a hash.

I am assuming that the possible wasted page of virtual address
space is going to perform faster than the alternatives, which
would be to copy the object header or ref delta into a temporary
buffer prior to parsing, or to check the window range on every byte
during header parsing.  We may decide to revisit this decision in
the future since this is just a gut instinct decision and has not
actually been proven out by experimental testing.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-29 11:36:45 -08:00
Shawn O. Pearce
77ccc5bbd1 Introduce new config option for mmap limit.
Rather than hardcoding the maximum number of bytes which can be
mmapped from pack files we should make this value configurable,
allowing the end user to increase or decrease this limit on a
per-repository basis depending on the size of the repository
and the capabilities of their operating system.

In general users should not need to manually tune such a low-level
setting within the core code, but being able to artifically limit
the number of bytes which we can mmap at once from pack files will
make it easier to craft test cases for the new mmap sliding window
implementation.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-29 11:36:44 -08:00
Junio C Hamano
d2c11a38c4 UTF-8: introduce i18n.logoutputencoding.
It is plausible for somebody to want to view the commit log in a
different encoding from i18n.commitencoding -- the project's
policy may be UTF-8 and the user may be using a commit message
hook to run iconv to conform to that policy (and either not have
i18n.commitencoding to default to UTF-8 or have it explicitly
set to UTF-8).  Even then, Latin-1 may be more convenient for
the usual pager and the terminal the user uses.

The new variable i18n.logoutputencoding is used in preference to
i18n.commitencoding to decide what encoding to recode the log
output in when git-log and friends formats the commit log message.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-27 16:41:33 -08:00
Junio C Hamano
aa1cef54a2 Merge branch 'jc/clone'
* jc/clone:
  Move "no merge candidate" warning into git-pull
  Use preprocessor constants for environment variable names.
  Do not create $GIT_DIR/remotes/ directory anymore.
  Introduce GIT_TEMPLATE_DIR
  Revert "fix testsuite: make sure they use templates freshly built from the source"
  fix testsuite: make sure they use templates freshly built from the source
  git-clone: lose the traditional 'no-separate-remote' layout
  git-clone: lose the artificial "first" fetch refspec
  git-pull: refuse default merge without branch.*.merge
  git-clone: use wildcard specification for tracking branches
2006-12-20 13:56:14 -08:00
Junio C Hamano
85023577a8 simplify inclusion of system header files.
This is a mechanical clean-up of the way *.c files include
system header files.

 (1) sources under compat/, platform sha-1 implementations, and
     xdelta code are exempt from the following rules;

 (2) the first #include must be "git-compat-util.h" or one of
     our own header file that includes it first (e.g. config.h,
     builtin.h, pkt-line.h);

 (3) system headers that are included in "git-compat-util.h"
     need not be included in individual C source files.

 (4) "git-compat-util.h" does not have to include subsystem
     specific header files (e.g. expat.h).

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-20 09:51:35 -08:00
Junio C Hamano
fc1905bb93 config_rename_section: fix FILE* leak
Noticed by SungHyun Nam.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-19 22:30:59 -08:00
Junio C Hamano
d4ebc36c5e Use preprocessor constants for environment variable names.
We broke the discipline Linus set up to allow compiler help us
avoid typos in environment names in the early days of git over
time.  This defines a handful preprocessor constants for
environment variable names used in relatively core parts of the
system.

I've left out variable names specific to subsystems such as HTTP
and SSL as I do not think they are big problems.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-19 01:51:51 -08:00
Johannes Schindelin
0667fcfb62 add a function to rename sections in the config
Given a config like this:

	# A config
	[very.interesting.section]
		not

The command

	$ git repo-config --rename-section very.interesting.section bla.1

will lead to this config:

	# A config
	[bla "1"]
		not

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-16 13:28:20 -08:00
Andy Parkins
a159ca0cb7 Allow subcommand.color and color.subcommand color configuration
While adding colour to the branch command it was pointed out that a
config option like "branch.color" conflicts with the pre-existing
"branch.something" namespace used for specifying default merge urls and
branches.  The suggested solution was to flip the order of the
components to "color.branch", which I did for colourising branch.

This patch does the same thing for
  - git-log (color.diff)
  - git-status (color.status)
  - git-diff (color.diff)
  - pager (color.pager)

I haven't removed the old config options; but they should probably be
deprecated and eventually removed to prevent future namespace
collisions.  I've done this deprecation by changing the documentation
for the config file to match the new names; and adding the "color.XXX"
options to contrib/completion/git-completion.bash.

Unfortunately git-svn reads "diff.color" and "pager.color"; which I
don't like to change unilaterally.

Signed-off-by: Andy Parkins <andyparkins@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-13 01:47:36 -08:00
Linus Torvalds
38c5afa87e Allow '-' in config variable names
I need this in order to allow aliases of the same form as "ls-tree",
"rev-parse" etc, so that I can use

	[alias]
		my-cat=--paginate cat-file -p

to add a "git my-cat" command.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-10-30 19:39:12 -08:00
Shawn Pearce
9befac470b Replace uses of strdup with xstrdup.
Like xmalloc and xrealloc xstrdup dies with a useful message if
the native strdup() implementation returns NULL rather than a
valid pointer.

I just tried to use xstrdup in new code and found it to be missing.
However I expected it to be present as xmalloc and xrealloc are
already commonly used throughout the code.

[jc: removed the part that deals with last_XXX, which I am
 finding more and more dubious these days.]

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-02 03:24:37 -07:00
Jonas Fonseca
2d7320d0b0 Use xmalloc instead of malloc
Signed-off-by: Jonas Fonseca <fonseca@diku.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-08-31 16:24:39 -07:00
Junio C Hamano
4cac42b132 free(NULL) is perfectly valid.
Jonas noticed some places say "if (X) free(X)" which is totally
unnecessary.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-08-27 21:19:39 -07:00
Matthias Lederhofer
aa086eb813 pager: config variable pager.color
enable/disable colored output when the pager is in use

Signed-off-by: Matthias Lederhofer <matled@gmx.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-31 15:32:24 -07:00
Linus Torvalds
93821bd97a sha1_file: add the ability to parse objects in "pack file format"
The pack-file format is slightly different from the traditional git
object format, in that it has a much denser binary header encoding.
The traditional format uses an ASCII string with type and length
information, which is somewhat wasteful.

A new object format starts with uncompressed binary header
followed by compressed payload -- this will allow us later to
copy the payload straight to packfiles.

Obviously they cannot be read by older versions of git, so for
now new object files are created with the traditional format.
core.legacyheaders configuration item, when set to false makes
the code write in new format for people to experiment with.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-13 23:11:56 -07:00
Junio C Hamano
624314fda7 boolean: accept yes and no as well
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-03 18:48:23 -07:00
Joachim B Haga
12f6c308d5 Make zlib compression level configurable, and change default.
With the change in default, "git add ." on kernel dir is about
twice as fast as before, with only minimal (0.5%) change in
object size. The speed difference is even more noticeable
when committing large files, which is now up to 8 times faster.

The configurability is through setting core.compression = [-1..9]
which maps to the zlib constants; -1 is the default, 0 is no
compression, and 1..9 are various speed/size tradeoffs, 9
being slowest.

Signed-off-by: Joachim B Haga (cjhaga@fys.uio.no)
Acked-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-07-03 13:55:11 -07:00
Peter Eriksen
817151e61a Rename safe_strncpy() to strlcpy().
This cleans up the use of safe_strncpy() even more.  Since it has the
same semantics as strlcpy() use this name instead.  Also move the
definition from inside path.c to its own file compat/strlcpy.c, and use
it conditionally at compile time, since some platforms already has
strlcpy().  It's included in the same way as compat/setenv.c.

Signed-off-by: Peter Eriksen <s022018@student.dtu.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-24 23:16:25 -07:00
Johannes Schindelin
e33d0611c0 git_config: access() returns 0 on success, not > 0
Another late-night bug. Sorry again.

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-20 01:21:53 -07:00
Johannes Schindelin
5f1a63e0ef Read configuration also from $HOME/.gitconfig
This patch is based on Pasky's, with three notable differences:

- I did not yet update the documentation
- I named it .gitconfig, not .gitrc
- git-repo-config does not barf when a unique key is overridden locally

The last means that if you have something like

	[alias]
		l = log --stat -M

in ~/.gitconfig, and

	[alias]
		l = log --stat -M next..

in $GIT_DIR/config, then

	git-repo-config alias.l

returns only one value, namely the value from $GIT_DIR/config.

If you set the environment variable GIT_CONFIG, $HOME/.gitconfig is not
read, and neither $GIT_DIR/config, but $GIT_CONFIG instead.

If you set GIT_CONFIG_LOCAL instead, it is interpreted instead of
$GIT_DIR/config, but $HOME/.gitconfig is still read.

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-19 17:53:13 -07:00
Johannes Schindelin
9c3796fc04 Fix setting config variables with an alternative GIT_CONFIG
When setting a config variable, git_config_set() ignored the variables
GIT_CONFIG and GIT_CONFIG_LOCAL. Now, when GIT_CONFIG_LOCAL is set, it
will write to that file. If not, GIT_CONFIG is checked, and only as a
fallback, the change is written to $GIT_DIR/config.

Add a test for it, and also future-proof the test for the upcoming
$HOME/.gitconfig support.

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-19 17:30:34 -07:00
Petr Baudis
7f29f7a95c Support for extracting configuration from different files
Add $GIT_CONFIG environment variable whose content is used instead
of .git/config if set. Also add $GIT_CONFIG_LOCAL as a
forward-compatibility cue for whenever we will finally come to support]
global configuration files (properly).

Signed-off-by: Petr Baudis <pasky@suse.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-18 21:19:07 -07:00
Peter Eriksen
bfbd0bb6ec Implement safe_strncpy() as strlcpy() and use it more.
Signed-off-by: Peter Eriksen <s022018@student.dtu.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-16 22:45:12 -07:00
Junio C Hamano
138086a725 shared repository - add a few missing calls to adjust_shared_perm().
There were a few calls to adjust_shared_perm() that were
missing:

 - init-db creates refs, refs/heads, and refs/tags before
   reading from templates that could specify sharedrepository in
   the config file;

 - updating config file created it under user's umask without
   adjusting;

 - updating refs created it under user's umask without
   adjusting;

 - switching branches created .git/HEAD under user's umask
   without adjusting.

This moves adjust_shared_perm() from sha1_file.c to path.c,
since a few SIMPLE_PROGRAM need to call repository configuration
functions which in turn need to call adjust_shared_perm().
sha1_file.c needs to link with SHA1 computation library which
is usually not linked to SIMPLE_PROGRAM.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-06-09 22:15:50 -07:00
Shawn Pearce
6de08ae688 Log ref updates to logs/refs/<ref>
If config parameter core.logAllRefUpdates is true or the log
file already exists then append a line to ".git/logs/refs/<ref>"
whenever git-update-ref <ref> is executed.  Each log line contains
the following information:

  oldsha1 <SP> newsha1 <SP> committer <LF>

where committer is the current user, date, time and timezone in
the standard GIT ident format.  If the caller is unable to append
to the log file then git-update-ref will fail without updating <ref>.

An optional message may be included in the log line with the -m flag.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 17:36:36 -07:00
Linus Torvalds
d14f776402 git config syntax updates
This updates the hierarchical section name syntax to

	[section<space>+"<randomstring>"]

where the only rule for "randomstring" is that it can't contain a newline,
and if you really want to insert a double-quote, you do it with \".

It turns that into the section name "secion.randomstring".  The
"section" part is still case insensitive, but the "randomstring"
part is case sensitive.

So you could use this for things like

	[email "torvalds@osdl.org"]
		name = Linus Torvalds

if you wanted to do the "email->name" conversion as part of the config
file format (I'm not claiming that is sensible, I'm just giving it as an
insane example). That would show up as the association

	email.torvalds@osdl.org.name -> Linus Torvalds

which is easy to parse (the "." in the email _looks_ ambiguous, but it
isn't: you know that there will always be a single key-name, so you find
the key name with "strrchr(name, '.')" and things are entirely
unambiguous).

Repo-config is updated to be able to parse the new format, and also
write things out in the new format.

[jc: rolled two patches from Linus and one fix-up from Sean into one,
 with additional adjustments for t/t1300 test to check the case
 insensitiveness of section base and variable and case sensitiveness
 of the extended section part.  Then stripped some part off to make
 the result applicable to the stale 1.3.X series that does not have
 recent enhancements. ]

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Sean Estabrooks <seanlkml@sympatico.ca>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-13 14:00:16 -07:00
sean
bdf0ef0824 Another config file parsing fix.
If the variable we need to store should go into a section
that currently only has a single variable (not matching
the one we're trying to insert), we will already be into
the next section before we notice we've bypassed the correct
location to insert the variable.

To handle this case we store the current location as soon
as we find a variable matching the section of our new
variable.

This breakage was brought up by Linus.

Signed-off-by: Sean Estabrooks <seanlkml@sympatico.ca>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-13 14:00:16 -07:00
Junio C Hamano
f8ba655ee4 Fix repo-config set-multivar error return path.
This hopefully fixes the problem an earlier commit 5d8ee9ceb attemted
to fix.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-07 21:27:30 -07:00
Pavel Roskin
5d8ee9ceb8 Release config lock if the regex is invalid
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-07 15:31:06 -07:00
Junio C Hamano
e388c73825 core.prefersymlinkrefs: use symlinks for .git/HEAD
When inspecting a project whose build infrastructure used to
assume that .git/HEAD is a symlink ref, core.prefersymlinkrefs
in the config file of such a project would help to bisect its
history.

Signed-off-by: Junio C Hamano <junkio@cox.net>
(cherry picked from 9f0bb90d16 commit)
2006-05-05 14:37:08 -07:00
Johannes Schindelin
7ebdba6142 repo-config: trim white-space before comment
Earlier, calling

	git-repo-config core.hello

on a .git/config like this:

	[core]
		hello = world ; a comment

would yield "world " (i.e. with a trailing space).

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
(cherry picked from c1aee1fd8d commit)
2006-05-05 14:34:47 -07:00
sean
93ddef3e2d Fix for config file section parsing.
Currently, if the target key has a section that matches
the initial substring of another section we mistakenly
believe we've found the correct section.  To avoid this
problem, ensure that the section lengths are identical
before comparison.

Signed-off-by: Sean Estabrooks <seanlkml@sympatico.ca>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-05 14:33:58 -07:00
Petr Baudis
1ab661ddb7 Document the configuration file
This patch adds a Documentation/config.txt file included by git-repo-config
and currently aggregating hopefully all the available git plumbing / core
porcelain configuration variables, as well as briefly describing the format.

It also updates an outdated bit of the example in git-repo-config(1).

Signed-off-by: Petr Baudis <pasky@suse.cz>
2006-04-24 22:26:37 -07:00
Serge E. Hallyn
dafc88b136 cleanups: prevent leak of two strduped strings in config.c
Config_filename and lockfile are strduped and then leaked in
git_config_set_multivar.

Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-04-17 15:06:37 -07:00
Junio C Hamano
2f8acdb38e core.warnambiguousrefs: warns when "name" is used and both "name" branch and tag exists.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-03-20 23:34:17 -08:00
Junio C Hamano
5f73076c1a "Assume unchanged" git
This adds "assume unchanged" logic, started by this message in the list
discussion recently:

	<Pine.LNX.4.64.0601311807470.7301@g5.osdl.org>

This is a workaround for filesystems that do not have lstat()
that is quick enough for the index mechanism to take advantage
of.  On the paths marked as "assumed to be unchanged", the user
needs to explicitly use update-index to register the object name
to be in the next commit.

You can use two new options to update-index to set and reset the
CE_VALID bit:

	git-update-index --assume-unchanged path...
	git-update-index --no-assume-unchanged path...

These forms manipulate only the CE_VALID bit; it does not change
the object name recorded in the index file.  Nor they add a new
entry to the index.

When the configuration variable "core.ignorestat = true" is set,
the index entries are marked with CE_VALID bit automatically
after:

 - update-index to explicitly register the current object name to the
   index file.

 - when update-index --refresh finds the path to be up-to-date.

 - when tools like read-tree -u and apply --index update the working
   tree file and register the current object name to the index file.

The flag is dropped upon read-tree that does not check out the index
entry.  This happens regardless of the core.ignorestat settings.

Index entries marked with CE_VALID bit are assumed to be
unchanged most of the time.  However, there are cases that
CE_VALID bit is ignored for the sake of safety and usability:

 - while "git-read-tree -m" or git-apply need to make sure
   that the paths involved in the merge do not have local
   modifications.  This sacrifices performance for safety.

 - when git-checkout-index -f -q -u -a tries to see if it needs
   to checkout the paths.  Otherwise you can never check
   anything out ;-).

 - when git-update-index --really-refresh (a new flag) tries to
   see if the index entry is up to date.  You can start with
   everything marked as CE_VALID and run this once to drop
   CE_VALID bit for paths that are modified.

Most notably, "update-index --refresh" honours CE_VALID and does
not actively stat, so after you modified a file in the working
tree, update-index --refresh would not notice until you tell the
index about it with "git-update-index path" or "git-update-index
--no-assume-unchanged path".

This version is not expected to be perfect.  I think diff
between index and/or tree and working files may need some
adjustment, and there probably needs other cases we should
automatically unmark paths that are marked to be CE_VALID.

But the basics seem to work, and ready to be tested by people
who asked for this feature.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-02-08 21:54:42 -08:00
Alex Riesen
88fb958baa use result of open(2) to check for presence
Not that the stat against open race would matter much in this context,
but that simplifies
the code a bit. Also some diagnostics added (why the open failed)

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-01-05 17:22:51 -08:00
Alex Riesen
7246ed438c \n usage in stderr output
fprintf and die sometimes have missing/excessive "\n" in their arguments,
correct the strings where I think it would be appropriate.

Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-12-21 23:09:40 -08:00
Junio C Hamano
53e7181cd9 config.c: remove unnecessary header in minimum configuration file.
It is just silly to start the file called "config" with a
comment that says "This is the config file."

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-12-05 12:58:53 -08:00
Junio C Hamano
0dccc7dcee config.c: constness tightening to avoid compilation warning.
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-28 01:46:15 -08:00
Junio C Hamano
4e72dcec89 Introduce i18n.commitencoding.
This is to hold what the project-local rule as to the
charset/encoding for the commit log message is.  Lack of it
defaults to utf-8.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-27 16:09:40 -08:00
Junio C Hamano
4f629539cd init-db: check template and repository format.
This makes init-db repository version aware.

It checks if an existing config file says the repository being
reinitialized is of a wrong version and aborts before doing
further harm.

When copying the templates, it makes sure the they are of the
right repository format version.  Otherwise the templates are
ignored with an warning message.

It copies the templates before creating the HEAD, and if the
config file is copied from the template directory, reads it,
primarily to pick up the value of core.symrefsonly.

It changes the way the result of the filemode reliability test
is written to the configuration file using git_config_set().
The test is done even if the config file was copied from the
templates.

And finally, our own repository format version is written to the
config file.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-27 01:32:59 -08:00
Junio C Hamano
3a2f2bb354 config.c: avoid shadowing global.
This is purely cosmetic, but avoid shadowing "FILE *config_file"
global in git_config_set_multivar() function.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-25 11:10:49 -08:00
Junio C Hamano
9ce392f482 Move diff.renamelimit out of default configuration.
Otherwise we would end up linking all the unneeded stuff into git-daemon
only to link with git_default_config.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-21 23:00:50 -08:00
Johannes Schindelin
b17e659dd4 Allow hierarchical section names
A .git/config like follows becomes valid with this patch:

	[remote.junio]
		url = git://git.kernel.org/pub/scm/git/git.git
		pull = master:junio todo:todo +pu:pu

	[remote.ibook]
		url = ibook:git/
		pull = master:ibook
		push = master:quetzal

(This patch only does the ini file thing, git-fetch and friends still
ignore these values).

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-21 14:04:28 -08:00
Johannes Schindelin
3dd94e3b2e git-config-set: Properly terminate strings with '\0'
When a lowercase version of the key was generated, it was not
terminated. Strangely enough, it worked on Linux and macosx anyway.
Just cygwin barfed.

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-21 14:04:22 -08:00
Johannes Schindelin
f98d863d21 git-config-set: support selecting values by non-matching regex
Extend the regex syntax of value_regex so that prepending an exclamation
mark means non-match:

	[core]
		quetzal = "Dodo" for Brainf*ck
		quetzal = "T. Rex" for Malbolge
		quetzal = "cat"

You can match the third line with

	git-config-set --get quetzal '! for '

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-20 10:53:06 -08:00
Johannes Schindelin
4ddba79db7 git-config-set: add more options
... namely

--replace-all, to replace any amount of matching lines, not just 0 or 1,
--get, to get the value of one key,
--get-all, the multivar version of --get, and
--unset-all, which deletes all matching lines from .git/config

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-19 23:15:07 -08:00
Johannes Schindelin
10bea152a3 Add functions git_config_set() and git_config_set_multivar()
The function git_config_set() does exactly what you think it does.
Given a key (in the form "core.filemode") and a value, it sets the
key to the value. Example:

	git_config_set("core.filemode", "true");

The function git_config_set_multivar() is meant for setting variables which
can have several values for the same key. Example:

	[diff]
		twohead = resolve
		twohead = recarsive

the typo in the second line can be replaced by

	git_config_set_multivar("diff.twohead", "recursive", "^recar");

The third argument of the function is a POSIX extended regex which has to
match the value. If there is no key/value pair with a matching value, a new
key/value pair is added.

These commands are also capable of unsetting (deleting) entries:

	git_config_set_multivar("diff.twohead", NULL, "sol");

will delete the entry

		twohead = resolve

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-19 20:47:29 -08:00
Junio C Hamano
3299c6f6a8 diff: make default rename detection limit configurable.
A while ago, a rename-detection limit logic was implemented as a
response to this thread:

	http://marc.theaimsgroup.com/?l=git&m=112413080630175

where gitweb was found to be using a lot of time and memory to
detect renames on huge commits.  git-diff family takes -l<num>
flag, and if the number of paths that are rename destination
candidates (i.e. new paths with -M, or modified paths with -C)
are larger than that number, skips rename/copy detection even
when -M or -C is specified on the command line.

This commit makes the rename detection limit easier to use.  You
can have:

	[diff]
		renamelimit = 30

in your .git/config file to specify the default rename detection
limit.  You can override this from the command line; giving 0
means 'unlimited':

	git diff -M -l0

We might want to change the default behaviour, when you do not
have the configuration, to limit it to say 20 paths or so.  This
would also help the diffstat generation after a big 'git pull'.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-15 15:08:27 -08:00
Johannes Schindelin
f8348be3be Add config variable core.symrefsonly
This allows you to force git to avoid symlinks for refs. Just add
something like

	[core]
		symrefsonly = true

to .git/config.

Don´t forget to "git checkout your_branch", or it does not do anything...

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-15 11:42:29 -08:00
Junio C Hamano
db2c075d93 Ignore '\r' at the end of line in $GIT_DIR/config
Unfortunate people may have to use $GIT_DIR/config edited on
DOSsy machine on UNIXy machine.  Ignore '\r' immediately
followed by '\n'.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-02 16:50:58 -08:00
Linus Torvalds
4546738b58 Unlocalized isspace and friends
Do our own ctype.h, just to get the sane semantics: we want
locale-independence, _and_ we want the right signed behaviour. Plus we
only use a very small subset of ctype.h anyway (isspace, isalpha,
isdigit and isalnum).

Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-10-14 17:17:27 -07:00
Linus Torvalds
128af9d1ef Make git config variable names case-insensitive
They always were meant to be case-insensitive, but I had missed one
"tolower()", making that not true.

The actual _values_ aren't case-insensitive, of course, although some uses
of them may be (ie boolean parsing uses "strcasecmp()" to match against
the strings "true" and "false").

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-10-11 18:47:34 -07:00
Linus Torvalds
e1b10391ea Use git config file for committer name and email info
This starts using the "user.name" and "user.email" config variables if
they exist as the default name and email when committing.  This means
that you don't have to use the GIT_COMMITTER_EMAIL environment variable
to override your email - you can just edit the config file instead.

The patch looks bigger than it is because it makes the default name and
email information non-static and renames it appropriately.  And it moves
the common git environment variables into a new library file, so that
you can link against libgit.a and get the git environment without having
to link in zlib and libcrypt.

In short, most of it is renaming and moving, the real change core is
just a few new lines in "git_default_config()" that copies the user
config values to the new base.

It also changes "git-var -l" to list the config variables.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-10-11 18:47:34 -07:00
Linus Torvalds
5cbb401dba Improve config file escape sanity checking
I had meant to disallow unknown escape characters in the config file
parser, but instead an unknown escaped character would silently pass
through as itself. That's correct for some cases (notably '\' itself), but
wasn't correct in general.

This fixes it, and makes the parser write a nice error message if the
config file contains bogus escaped characters.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-10-11 15:24:11 -07:00
Linus Torvalds
17712991a5 Add ".git/config" file parser
This is a first cut at a very simple parser for a git config file.

The format of the file is a simple ini-file like thing, with simple
variable/value pairs. You can (and should) make the variables have a
simple single-level scope, ie a valid file looks something like this:

	#
	# This is the config file, and
	# a '#' or ';' character indicates
	# a comment
	#

	; core variables
	[core]
		; Don't trust file modes
		filemode = false

	; Our diff algorithm
	[diff]
		external = "/usr/local/bin/gnu-diff -u"
		renames = true

which parses into three variables: "core.filemode" is associated with the
string "false", and "diff.external" gets the appropriate quoted value.

Right now we only react to one variable: "core.filemode" is a boolean that
decides if we should care about the 0100 (user-execute) bit of the stat
information. Even that is just a parsing demonstration - this doesn't
actually implement that st_mode compare logic itself.

Different programs can react to different config options, although they
should always fall back to calling "git_default_config()" on any config
option name that they don't recognize.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-10-10 16:31:08 -07:00